// Copyright (c) 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/message_center/popup_timer.h"

namespace message_center {

PopupTimer::PopupTimer(const std::string& id,
    base::TimeDelta timeout,
    base::WeakPtr<Delegate> delegate)
    : id_(id)
    , timeout_(timeout)
    , timer_delegate_(delegate)
    , timer_(new base::OneShotTimer)
{
}

PopupTimer::~PopupTimer()
{
    if (!timer_)
        return;

    if (timer_->IsRunning())
        timer_->Stop();
}

void PopupTimer::Start()
{
    if (timer_->IsRunning())
        return;
    base::TimeDelta timeout_to_close = timeout_ <= passed_ ? base::TimeDelta() : timeout_ - passed_;
    start_time_ = base::Time::Now();

    DCHECK(timer_delegate_);
    timer_->Start(
        FROM_HERE, timeout_to_close,
        base::Bind(&Delegate::TimerFinished, timer_delegate_, id_));
}

void PopupTimer::Pause()
{
    if (!timer_ || !timer_->IsRunning())
        return;

    timer_->Stop();
    passed_ += base::Time::Now() - start_time_;
}

void PopupTimer::Reset()
{
    if (timer_)
        timer_->Stop();
    passed_ = base::TimeDelta();
}

} // namespace message_center
